Identify the correct sentence. A. Cebile was a good worker, for example, she always finished her projects on time and with superior results. B. Cebile was a good worker, for example, she always finished her projects on time and with superior results. C. Cebile was a good worker; for example, she always finished her projects on time and with superior results. D. Cebile was a good worker, for example: she always finished her projects on time and with superior results.

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).